package String;

/**
 * @author wuhan
 * @date 2019/9/24 13:48
 */
public class SpringBuilderDemo {
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder("HelloWorld");
        sb.append(" Nihao");
        sb.insert(sb.length(),"sd");
        System.out.println(sb);
    }
}
